Iran launched a wave of attacks on U.S. sites across the Middle East on Sept. 2, as violence surged after an extensive American bombardment and the deaths of four people at an Iranian wedding party.

The U.S. military says it's striking new targets in Iran as hostilities flare again after a month without military action.

The U.S. launched fresh airstrikes against Iranian targets Tuesday, raising fears of a broader return to hostilities as Tehran threatened to choke off Gulf...